I went down to the Xend table to look at it to understand Steve's proposal, and I noticed that the doubling crystal's heater's cable is mushed between the table's edge and the black table cover wall. This made me sad, so I disabled the heater, turned it off, then unplugged the cable from the back of the controller. I tried to re-route the cable through the hole in the black table cover wall, but going that way the cable is ~1 foot too short. So I put it back the way it was, but used a totally hacky solution to prevent the cable from being mushed. I put a dog clamp right at the edge of the table so it is pushing on the table cover wall a little bit, to give the cable space to get out. This is very mickey mouse, and kind of lame. But we either need to make a cable extension, or somehow get the heater controller to sit much, much higher under the table.
I plugged the heater controller back in, and turned it back on to the same setpoint that it was at (I think 37.5C). It's probably warm by now, but when I turned it back on, the heater's actual temp was 33C.